The contribution of IT to business performance has been studied from two main perspectives: a ‘strategy as positioning perspective,’ which underlines a market power imperative, and a resource- based view perspective, which conceptualizes the enterprise as a ‘bundle of unique resources.’ The objective of the present study is to improve our understanding of the contribution of IT to firm performance in building upon the complementarity between the two perspectives. To do so, a model proposed by [Spanos, Y.E., Lioukas, S. 2001. An examination into the causal logic of rent generation: contrasting Porter’s competitive strategy framework and the resource-based perspective. Strategic Management Journal 22(10), 907–934], which comprises both a competitive strategy framework and the resource-based perspective was adapted to reflect the role played by IT. More precisely, the model encapsulates the effects of both IT support for business strategy and IT support for firm assets on firm performance. To test the model, a survey of 96 small- and medium-sized enterprises (SME) was conducted.